JPH052995Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a swing sorting device in a threshing machine for threshing grain culms.

(b) Prior art A rocking sorting device for a threshing machine in which mounting bodies were attached to both ends of a large number of horizontal bars, and these were attached to holding plates at appropriate intervals to form a chaff sheave, was disclosed in Utility Model Publication No. 59-6675. Publication and Utility Model Application No. 56-62041
This is already known from publications such as No.

(c) Problems to be solved by the invention The chaff sheave of the swing sorting device in the known threshing machine has a groove opened at the bottom inside each mounting body, and the end of the horizontal bar is connected to the bottom of the mounting body. Fit loosely into the groove from below, and fit the protrusion protruding outside the upper part of the mounting body into the hole of the holding plate, and the hole provided at the bottom of the holding plate.
In order to support the outer lower part of the horizontal crosspiece, a pin with a large diameter head was inserted from the inside and secured with a bolt or fixing pin, so I had to hold the horizontal crosspiece in my hand to prevent it from falling. This requires a troublesome operation of inserting the retaining pin from the inside, and requires locking with bolts or locking pins, which increases the number of parts, increases costs, and makes assembly extremely troublesome.

(d) Means for solving the problems The present invention is a threshing machine in which a swinging sorting body is installed to screen threshed grain while transferring it, and the chaff sieve of the swinging sorting body is composed of a large number of horizontal bars. A pair of upper and lower protrusions is provided at the end of the horizontal bar, a U-shaped bushing is made of a material that is different from the horizontal bar and is compatible with the horizontal bar, and the protruding part is formed on the convex part of the U-shaped bushing. A tapered elongated hole is provided to be press-fitted, and the upper and lower convex portions of the bushing are inserted from the outside into the round hole provided at the upper part of the holding plate and the arc-shaped elongated hole provided diagonally below the holding plate. By press-fitting the protruding part of the crosspiece, the protruding part can be inserted into the tapered elongated hole of the bush made of different materials and assembled by simply pushing the bush from the outside of the retaining plate. The above-mentioned problem is solved by making it possible to connect the crosspiece to the bushing without damaging it.

(E) Function: The protruding parts of the bushings are partially inserted from the outside into the circular holes and elongated holes of the holding plate, which is the side plate of the frame body, and then the protruding parts of each horizontal bar are formed in the protruding parts of the bushings. The horizontal beam can be assembled to the retaining plate by inserting the bushing into the groove provided and then pushing the bushing from the outside.

At this time, the protrusion of the horizontal bar is press-fitted into the tapered elongated hole of the bush made of a material that is easily compatible with the protrusion, so that although the horizontal bar is thin, it will not be damaged and the two will be firmly connected.

(F) Embodiment To explain an embodiment of the present invention, a threshing machine for a combine harvester is shown in the drawings. Reference numeral 1 refers to a handling barrel mounted on a shaft in a handling chamber 2, and a dust-feeding machine installed on one side at the rear of the handling chamber. A processing cylinder 5 is mounted on a shaft in a processing chamber 4 provided from the side to the rear of the opening 3, and a swinging sorting body 8 is installed from below the receiving screen 6 of the processing chamber 2 to the dust sorting chamber 7. It is installed so that it can swing back and forth, and the swinging sorting body 8 is connected to the transfer plate 1.
0, the front chaff sheave 11, and the rear chaf sheave 12. The air blower 18 provided below the supply port blows through the front chaff sheave 11 and the net 20 stretched over the starting ends of the transfer plates 10 and 13. A sorting air passage, a sorting air passage that blows through the sorting net 15 and rear chaff sheave 12 from below the transfer plate 13, and the first receiving gutter 14.
A suction wind turbine 2 installed on one side of the rear part constitutes a sorting air passage that blows through the stroke rack 17 through the lower part of the
1 sucks the exhaust port and the dust sorting chamber 7 provided on one side of the rear part of the processing chamber 4.

A feed chain 22 and a pinching rail 23 are installed opposite to each other on the outside of the handling port, and the exhaust dust sorting chamber 7 is connected from the rear end thereof.
A straw removal conveying device 25 is provided above.

The frame of the front chaff sheave 11 has mounting seats 27 fixed to the front and rear of the left and right retaining plates 26, 26 which form an inverted L shape, and L
It is constructed by screwing both ends of the horizontal frame plates 28, 28 of the mold, and the holding plates 26, 26 have a large number of round holes 30 at desired intervals in the upper part, and a plurality of round holes 30 in the lower part at the center. Arc-shaped elongated holes 31 are provided.

The horizontal beam 32 has protrusions 33 at the upper and lower parts of both ends, as shown in FIG. 3, and the lower parts other than both sides are bent into an L-shape.

The bush 35 has an arm portion 34 having a flat outer surface and an arcuate inner surface, and elongated holes 36, 36 that are bored inside the upper and lower parts and have a circular cross section and a gradual taper at the top and bottom. Convex portion 37,
37 is molded from nylon, which easily conforms to the shape of the inserted object and has high abrasion resistance, or other synthetic resin with the same effect.

The inclination angle adjustment device of the horizontal crosspiece 32 is provided in a round hole 38 into which the lower protrusion 37 of the bush 35 is loosely fitted.
A connecting plate 39 with holes 39, upper and lower elongated holes 36,
36 fits into the protruding parts 33, 33 of one horizontal bar 32 inside the holding plate 26, and the extending part 40a into which the bolt 41 is fitted outward is projected in the direction opposite to the inclination direction of the horizontal bar 32. The adjustment plate 40 is fixed to the horizontal crosspiece 32 at the rear, and the bolt 41 pivots the upper part of the adjustment plate 40. It loosely fits into a substantially horizontal arcuate long hole 42 bored in the holding plate 26 directly below the round hole 30, and is screwed with a nut 43.

The inclination angle of the horizontal beams 32 can be determined by inserting a wrench through the window 45 provided in the machine wall and loosening the nuts 43.
Alternatively, the bolts 41 can be made slightly longer and stepped so that the adjustment plate 40 can be tilted, and the bolts 41 can be tightened by tightening the bolts 41 between the clamping rails 23.
The inclination angle of the horizontal bar 32 is adjusted in conjunction with the amount of grain culm to be threshed by interlocking and connecting with wires or links, etc., and furthermore, the inclination angle of the horizontal bar of the rear chaff sheave 12 is adjusted. If so, it will be interlocked with the connecting plate or adjustment plate attached to it.

At this time, since the adjustment operation direction is approximately horizontal, the operation is easier than the one that operates in an oblique direction as described in Japanese Utility Model Application Publication No. 56-62041, and
Since the adjustment plate 40 can be smoothly interlocked with other members and is attached to the bush 35, a separate member for supporting the adjustment plate 40 can be omitted.

Therefore, the front chaff sheave 11 is connected to the horizontal bar 32...
The protrusions 33... of the holding plates 26, 26 are connected to the round holes 30...
When fitting into the long holes 31..., the round holes 3 of the connecting plate 39
8 and the protrusions 33 corresponding to the upper and lower elongated holes of the adjusting plate 40, and the elongated holes 36 of the protrusions 37 of the bushes 35 are inserted into the horizontal crosspiece 3 from the outside of the retaining plates 26, 26.
When the protrusions 33 are fitted into the protrusions 33 of 2 and pushed in, or hammered in from the outside, the protrusions 33 are press-fitted into the elongated holes 36 on the taper and the horizontal beams 32 are pushed into the bushes 35.
It can be firmly attached to.

Furthermore, even if the elongated holes 36 of the convex portion 37 are made parallel at the top and bottom, and the top and bottom of the protruding portion 33 are made tapered, a reliable fixing effect can be obtained by the same operation as described above.

In this state, the upper horizontal parts of the holding plates 26, 26 form an inverted L shape, and the lower parts overlap the upper surface of the mounting plate 47 screwed onto the side plate of the swinging sorter 8, and the bolts 48... Since they are screwed together, it is possible to prevent straw waste from entering between the holding plate 26 and the mounting plate 47, and even if it enters through the elongated hole 31, it will not fall freely downward and become clogged. Therefore, the adjustment operation of the horizontal beam 32 can be performed smoothly.

Next, to explain the sorting of grain threshing, handling room 2
The grains and small straw waste generated in the interior leak from the receiving net 6 onto the transfer plate 10, where they are sieved while being screened by the front chaff sieve 11, and are further sieved by the rear chaff sieve 12, which consists of horizontal bars with small intervals. Wind selection and sieve sorting are carried out.

In addition, the leakage material from the front and rear chaff sieves 11 and 12 is sieved and screened by a sorting net 15 and falls into the first receiving gutter 14, and straw waste including the second one remains on the sorting net 15. The waste is transferred to the stroke rack 17 and subjected to sieving and winnowing, and the second waste that leaks and falls into the second receiving gutter 16 is returned to the handling chamber 2 or the transfer plate 10 by the second thrower.

Furthermore, the dust discharged from the dust inlet 3 is transferred to the processing chamber 4.
The straw waste that leaks from the processing cylinder receiving net 50 joins the swinging sorter 8 and is sorted, and the straw waste that has moved to the end of the processing chamber 4 is discharged from the discharge port. The straw waste floating in the dust sorting chamber 7 is sucked out of the machine by the suction windmill 21,
Large pieces of straw are discharged from the dust outlet 52 to the outside of the machine.

When carrying out such threshing sorting process, if the grain culm to be harvested and threshed is well dry, or for wheat etc., the distance between the horizontal bars 32 of the front chaff sheave 11 is increased, so that the amount of threshed grain for rice is reduced. If the number of sieves is small, narrowing the sieve allows proper sieving.

Reference numeral 53 is a maltplane that comes into contact with the lower surface of the upper horizontal portion of the mounting plate 47, and expands and contracts to prevent a gap from forming on the lower surface in the horizontal direction.

Figures 7 to 10 show another embodiment, in which the holding plate 26 is directly screwed onto the side plate of the swinging sorter 8 and also serves as a mounting plate, as shown in Figure 10. Then, a bolt 55 which has been inserted into the hole of the connecting plate 39 from the inside and welded is loosely fitted into the oblique long hole 31a drilled directly below the round hole 30 at the end, and a washer 56 is overlapped from the outside and the nut is screwed. 57, and when adjusting the inclination angle of the horizontal bar 32, remove the cover 58, insert your hand through the window 45, loosen the nut 57, and tighten the bolt 55 so that it is centered on the round hole 30. When the bushes 3 are moved diagonally up and down along the arc-shaped elongated holes 31a, each bush 3
The lower part of 5... rotates obliquely up and down about the upper round hole 30..., and the horizontal bars 32... simultaneously and smoothly tilt.

In any of the embodiments, the horizontal bar 32
The protrusions 33 of... are press-fitted into the tapered elongated holes 36 provided in the protrusions 37 of the bushes 35 made of a material that is easily compatible with the protrusions 33, so the swinging sorter 8 swings back and forth at high speed. Nevertheless, the desired sieve sorting can be continued stably without any loosening.

(g) Effects of the invention As described above, the present invention includes a swinging sorting body 8 that sieves the threshed grain while transporting it, and
In a threshing machine in which a chaff sheave is composed of a large number of horizontal bars 32, a pair of upper and lower protrusions 33, 33 are provided at the ends of the horizontal bars 32, and a U-shaped bush 3 is provided.
5 is made of a material that is different from the horizontal bar 32 and is compatible with it, and the convex portion 3 of the U-shaped bush 35 is
7 and 37 are provided with tapered elongated holes 36 and 36 into which the protrusions 33 and 33 are press-fitted, and the bush 3
The upper and lower convex portions 37, 37 of the holding plates 26, 26 are inserted from the outside into the circular holes 30 provided at the upper portions of the retaining plates 26, 26, and the circular arc-shaped elongated holes 31 provided diagonally below the holes 30, and the horizontal bars 32... Since the protrusions 33 are press-fitted, just by pushing the bushes 35 from the outside, the protrusions 33 of the horizontal crosspiece 32 push open the tapered elongated holes 36 of the bushes 35 and fit in well. The horizontal beams 32 can be firmly fixed to the bushes 35 by an extremely simple operation of pushing the bushes 35 from the outside, and the swinging sorting body 8 with the chaff sheave attached can swing back and forth at high speed for a long time. Nevertheless, the joint between the horizontal bar 32 and the bush 35 does not loosen, and it is possible to perform stable and accurate sieving as desired.

In addition, the horizontal beam 32 can be attached by simply pushing the bush 35 from the outside, which reduces the number of assembly steps and the number of parts, resulting in a significant cost reduction.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is an exploded perspective view of the front chaff sheave, Figure 2a is a front view of the bushing, b is a side view of the same, Figure 3a is a front view of the crosspiece, b is a side view of the same, and Figure 4 is the front. 5 is a cross-sectional view of the same as above, FIG. 6 is a vertical sectional view of the threshing machine, and FIGS. 7 to 10 show other embodiments, and FIG. 7 is an exploded view of the chaff sheave. A perspective view, FIG. 8 is a sectional view of the adjustment section,
FIG. 9 is a side view of the chaff sheave, and FIG. 10 is a cross-sectional view of the same. 8... Rocking sorter, 26... Holding plate, 30...
Round hole, 31...Long hole, 32...Horizontal bar, 33...Protrusion, 35...Button, 36...Long hole, 37...
...Protrusion.

Claims (1)

[Scope of utility model registration request] Oscillating sorter 8 that sieves grains while transporting them
In a threshing machine in which the chaff sheave of the swinging sorting body 8 is constructed of a large number of horizontal bars 32, a pair of upper and lower protrusions 33, 33 are provided at the ends of the horizontal bars 32, and a U-shaped The bushing 35 is made of a material that is different from the horizontal bar 32 and is easily compatible with the horizontal bar 32, and the protruding portions 37, 37 of the U-shaped bushing 35 are
Tapered long holes 36, 3 into which 3, 33 are press-fitted
6 are provided, and the upper and lower convex portions 37, 3 of the bush 35 are provided.
7 is a round hole 30 provided in the upper part of the retaining plates 26, 26.
and a circular arc-shaped elongated hole 31 provided at an oblique lower part thereof from the outside, and is press-fitted to protrusions 33, 33 of the horizontal bars 32. .